30amp service is not always '30amps' maximum, as breakers are not 'exact' is how they react to HEAT(amps) flowing thru them - some will react quicker, such as when the breaker is old, overused, weak, etc, making the RV owner think they have somehow 'used' too much power - the reality is that there is no 'exact' same reaction because there are too many variables.
Yes, your own appliances will determine how 'much' amperage you draw at any given moment, and microwaves are not all of the 'same' amperage draw variety - some are 900watts, while other larger ones are 1100watts, etc. How 'long' you have that appliance operating comes into play. The outside 'ambient' temperature also plays a factor, a BIG factor in very hot weather, where the wires, especially those shore power cords exposed to sunshine, can certainly cause a breaker to trip sooner than 'normal'.
There are a lot of factors when it comes to RV power, but yes, you can easily run two 13.5kw a/c units at the same time on 'only' 30amp power, IF the breaker is new or reacting correctly, and IF you are also aware of your other large draws, such as electric water heaters, microwaves, and even the Converter/Battery Charger.
Power is power, there is no 'you can't do this, you can't do that' answer = in many cases you may be able to successfully do what you wish, while the next stop may not be so kind. It's the nature of the 'mobile' environment and the many various 'electrical' power sources and devices we use along the way.
__________________
the Turners...
two Campers, two Electric cars
former diesel pusher traveler
|